AdWords API v201409 will be sunset on July 28, 2015, after which all v201409 API requests will begin to fail. This version was deprecated on March 5, 2015. With the release of v201506, you now have less than 5 weeks to migrate directly to v201506 and skip v201502 entirely. Please make sure to migrate soon to ensure your API access is unaffected.
We have prepared various resources to help with the migration: As always, if you have any questions about this migration, please contact us via the forum or the Ads Developers Plus Page.
We have prepared various resources to help with the migration: As always, if you have any questions about this migration, please contact us via the forum or the Ads Developers Plus Page.
from Google Ads Developer Blog http://googleadsdeveloper.blogspot.com/2015/07/adwords-api-v201409-sunset-reminder.html